标准编号：ISO 4427-5:2019
中文名称：供水和排水及排水用塑料管道系统 聚乙烯（PE） 第5部分：系统用途的适用性
英文名称：Plastics piping systems for water supply, and for drainage and sewerage under pressure — Polyethylene (PE) — Part 5: Fitness for purpose of the system
发布日期：2019-08
标准范围
This document specifies the characteristics of the fitness for purpose of pipes and/or fittings assemblies
made from polyethylene (PE) for buried or above ground applications, intended for the conveyance of
water for human consumption, raw water prior to treatment, drainage and sewerage under pressure,
vacuum sewer systems, and water for other purposes.
NOTE 1 The intended uses include sea outfalls, laid in water and pipes suspended below bridges.
NOTE 2 This document is intended to be only used by the product manufacturer to assess the performance
of components according to ISO 4427-2 and/or ISO 4427-3 when joined together under normal and extreme
conditions. It is not intended for on-site testing of pipe systems.
This document also specifies the test parameters for the test methods referred to in this document.
In conjunction with the other parts of the ISO 4427 series, this document is applicable to PE pipes,
fittings, their joints and to joints with components of PE and other materials, intended to be used under
the following conditions:
a) a maximum allowable operating pressure (PFA) up to and including 25 bar ;
b) an operating temperature of 20 °C as the reference temperature.
NOTE 3 For other operating temperatures, guidance is given in ISO 4427-1: 2019, Annex A.
The ISO 4427 series covers a range of maximum allowable operating pressures and gives requirements
concerning colours.
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